Item 1- Annual Maintenance Service Contract for one number of Atomic Absorption Spectrometer for a period of two years- as per the technical specification in annexure A and B., Item 2- List of Spares to be changed if required- Voltage Regulator Assembly plus5V plus 12V- 12V plus24V, Item 3- Power Supply Rectifier Module, Item 4- High Current MOSFET, Item 5- Amplifier I. C., Item 6- PMT High Voltage Transformer, Item 7- Data Buffers, Item 8- RAM I. C., Item 9- ROM I. C., Item 10- Micro Controller I. C., Item 11- Multi Element Hollow Cathode Lamp Cr- Co- Cu- Fe- Mn- Ni, Item 12- Single Element Hollow Cathode Lamp Copper- Iron- Nickel, Item 13- PWM Controller, Item 14- PMT Detector, Item 15- Programmable Logic Device, Item 16- FPGA, Item 17- GAL, Item 18- Multiplexer, Item 19- Drivers IC, Item 20- CPLD